Home / 1,885.06-2,600.40-1,221.58

Finding the Fourth Proportional to 1,885.06, 2,600.40 and 1,221.58

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Solution

The fourth proportional to 1,885.06, 2,600.40 and 1,221.58 is: 1,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.06 : 2,600.40 = 1,221.58 : x
  2. Step 2: Convert to fraction form
    1,885.06/2,600.40 = 1,221.58/x
  3. Step 3: Cross multiply
    1,885.06x = 2,600.40 × 1,221.58
  4. Step 4: Simplify right side
    1,885.06x = 3,176,596.63
  5. Step 5: Solve for x
    x = 3,176,596.63/1,885.06
  6. Step 6: Final answer
    x = 1,685.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.